<i>Vincetoxicum arabicum</i> (Apocynaceae–Asclepiadoideae), a new combination for a species in Arabia and Africa, and notes on <i>Rhinolobium</i>

The new combination Vincetoxicum arabicum is made for a species in Saudi Arabia and northeastern eastern Africa that has previously mostly been called Blyttia fruticulosa or fruticulosum. basionym, arabica, regarded as superfluous name, resurrected. A synonymy of V. provided, the illustrated by photographs. Rhinolobium, with R. tenue type, published simultaneously B. an older name Aspidoglossum.